<template>
  <a-layout>
    <a-layout-content
        :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <a-row>
        <a-col :span="8" :gutter="24">
          <a-space size="small">
            <a-button type="primary" @click="handleQuery()" size="large">
              刷新
            </a-button>
            <a-button type="primary" @click="add()" size="large">
              新增
            </a-button>
          </a-space>
          <a-table :columns="columns"
                   v-if="level1.length > 0"
                   :row-key="record => record.id"
                   :data-source="level1"
                   :loading="modalLoading"
                   :pagination="false"
                   size="small"
                   :defaultExpandAllRows="true"
          >
            <template #name="{ text, record }">
              {{ record.sort }} {{ text }}
            </template>
            <template v-slot:action="{ text, record }">
              <a-space size="small">
                <a-button type="primary" @click="edit(record)" size="small">
                  编辑
                </a-button>
                <a-popconfirm
                    title="删除后不可恢复，确认删除?"
                    ok-text="是"
                    cancel-text="否"
                    @confirm="showDeleteConfirm(record.id)"
                >
                  <a-button type="primary" danger size="small">
                    删除
                  </a-button>
                </a-popconfirm>
              </a-space>
            </template>
          </a-table>
        </a-col>
        <a-col :span="16">
          <p>
            <a-button type="primary" @click="handleSave">
              保存
            </a-button>
          </p>
          <a-form :model="doc" layout="vertical">
            <a-form-item label="名称">
              <a-input v-model:value="doc.name" placeholder="名称"/>
            </a-form-item>
            <a-form-item label="父文档">
              <a-tree-select
                  v-model:value="doc.parent"
                  style="width: 100%"
                  :dropdown-style="{ maxHeight: '400px', overflow: 'auto' }"
                  :tree-data="treeSelectData"
                  placeholder="选择父文档"
                  tree-default-expand-all
                  :replaceFields="{title: 'name', key: 'id', value: 'id'}"
              >
              </a-tree-select>
            </a-form-item>
            <a-form-item label="顺序" placeholder="顺序">
              <a-input v-model:value="doc.sort"/>
            </a-form-item>
            <a-form-item>
              <a-button type="primary" @click="handlePreviewContent()">
                <EyeOutlined/>
                内容预览
              </a-button>
            </a-form-item>
            <a-form-item>
              <div id="content"></div>
            </a-form-item>

          </a-form>
        </a-col>
      </a-row>
      <a-drawer
          width="900"
          placement="right"
          :closable="false"
          v-model:visible="drawerVisible"
          @close="onDrawerClose"
      >
        <div class="wangeditor" :innerHTML="previewHtml"></div>
      </a-drawer>

    </a-layout-content>
  </a-layout>

  <!--  <a-modal title="文档表单"-->
  <!--           v-model:visible="modalVisible"-->
  <!--           @ok="handleModalOk"-->
  <!--           :confirm-loading="modalLoading">-->
  <!--  </a-modal>-->
</template>

<script lang="ts">
import {defineComponent, onMounted, ref, createVNode} from 'vue';
import axios from 'axios'
import {message} from "ant-design-vue";
import {Tool} from "@/util/tool";
import {useRoute} from "vue-router";
import {Modal} from 'ant-design-vue';
import {ExclamationCircleOutlined} from '@ant-design/icons-vue';
import E from 'wangeditor'

export default defineComponent({
  name: 'AdminDoc',
  setup() {
    console.log("setup");
    const docs = ref();
    const route = useRoute();
    const loading = ref(false);
    const KeyValue = ref<string>('');
    //因为树选择组件的属性状态，会随当前编辑的节点变化，所以单独声明
    const treeSelectData = ref();
    treeSelectData.value = [];
    const columns = [
      {
        title: '名称',
        dataIndex: 'name',
        slots: {customRender: 'name'}
      },
      {
        title: 'action',
        key: 'action',
        slots: {customRender: 'action'}
      }
    ];

    const showDeleteConfirm = (id: number) => {
      Modal.confirm({
        title: () => '重要提醒',
        icon: () => createVNode(ExclamationCircleOutlined),
        content: () => '将要删除该文档以及其子文档，删除后不可恢复，确认删除？',
        okText: () => '确认',
        okType: 'danger',
        cancelText: () => '取消',
        onOk() {
          handleDelete(id)
        },
        onCancel() {
          console.log('Cancel');
        },
      });
    };
    /**
     * 一级文档树，children属性就是二级文档
     * [{
     *   id: "",
     *   name: "",
     *   children:[{
     *     id: "",
     *     name: "",
     *   }]
     * }]
     */
    const level1 = ref();  //一级文档树，children属性就是二级文档
    level1.value = [];
    /**
     * 数据查询
     **/
    const handleQuery = () => {
      loading.value = true;
      axios.get("/doc/all/" + route.query.ebookId).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          docs.value = data.content;
          console.log("原始数组：", docs.value);

          level1.value = [];
          level1.value = Tool.array2Tree(docs.value, 0);
          console.log("树形结构：", level1);
          //父文档下拉框初始化，相当于点击新增
          treeSelectData.value = Tool.copy(level1.value) || [];

          //为选择树添加一个"无"
          treeSelectData.value.unshift({id: 0, name: '无'});

        } else {
          message.error(data.message);
        }
      })
    };


    //---------------表单-----------------
    let editor: E;
    const doc = ref();
    doc.value = {
      ebookId: route.query.ebookId
    };
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleSave = () => {
      modalLoading.value = true;
      doc.value.content = editor.txt.html();
      axios.post("/doc/save", doc.value).then((response) => {
        const data = response.data; // data == commonResp
        if (data.success) {

          message.success("保存成功！")
          //重新加载列表
          modalLoading.value = false;
          handleQuery();
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 将某节点及其子孙节点全部置为disabled
     * @param treeSelectData
     * @param id
     */
    const setDisable = (treeSelectData: any, id: any) => {
      console.log(treeSelectData, id);
      //遍历数组，即遍历某一层节点
      for (let i = 0; i < treeSelectData.length; i++) {
        const node = treeSelectData[i];
        if (node.id === id) {
          //如果当前节点就是目标节点
          console.log("disabled", node);
          //将目标节点设置为disabled
          node.disabled = true;

          //遍历所有子节点，将所有子节点全部都加上disabled
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            for (let j = 0; j < children.length; j++) {
              setDisable(children, children[j].id);
            }
          }
        } else {
          //如果当前饥饿点不是目标节点，则到其子节点再找找看
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            setDisable(children, id);
          }
        }
      }
    };

    let ids: Array<string> = [];
    /**
     * 查找整根树枝
     **/
    const getDeleteIds = (treeSelectData: any, id: any) => {
      console.log(treeSelectData, id);
      //遍历数组，即遍历某一层节点
      for (let i = 0; i < treeSelectData.length; i++) {
        const node = treeSelectData[i];
        if (node.id === id) {
          console.log("delete", node);
          //将目标id放入结果集ids
          ids.push(id);
          //遍历所有子节点
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            for (let j = 0; j < children.length; j++) {
              getDeleteIds(children, children[j].id);
            }
          }
        } else {
          //如果当前饥饿点不是目标节点，则到其子节点再找找看
          const children = node.children;
          if (Tool.isNotEmpty(children)) {
            getDeleteIds(children, id);
          }
        }
      }
    };

    /**
     * 内容查询
     **/
    const handleQueryContent = () => {
      axios.get("/doc/find-content/" + doc.value.id).then((response) => {
        loading.value = false;
        const data = response.data;
        if (data.success) {
          editor.txt.html(data.content);
        } else {
          message.error(data.message);
        }
      })
    };

    /**
     *编辑
     **/
    const edit = (record: any) => {
      //清空文本框
      editor.txt.html("");
      modalVisible.value = true;
      doc.value = Tool.copy(record); //不复制会指向同一内存地址,导致数值绑死
      handleQueryContent();
      //不能选择当前节点以及所有子孙节点，作为父节点，会使树断开
      treeSelectData.value = Tool.copy(level1.value);
      setDisable(treeSelectData.value, record.id);

      //为选择树添加一个"无"
      treeSelectData.value.unshift({id: 0, name: '无'});

      setTimeout(function () {
        const editor = new E('#content')
        editor.create();
      }, 100);
    };

    /**
     *新增
     **/
    const add = () => {
      //清空文本框
      editor.txt.html("");
      modalVisible.value = true;
      doc.value = {
        ebookId: route.query.ebookId
      };
      treeSelectData.value = Tool.copy(level1.value);

      //为选择树添加一个"无"
      treeSelectData.value.unshift({id: 0, name: '无'});

      setTimeout(function () {
        const editor = new E('#content')
        editor.create();
      }, 100);
    };
    /**
     *删除
     **/
    const handleDelete = (id: number) => {
      //下一次删除时首先清空缓存
      ids = [];
      getDeleteIds(level1.value, id);
      axios.delete("/doc/delete/" + ids.join(",")).then((response) => {

        const data = response.data; // data == commonResp
        if (data.success) {
          //重新加载列表
          handleQuery();
        }
      });
    };

    //-----------富文本预览--------------
    const drawerVisible = ref(false);
    const previewHtml = ref();
    const handlePreviewContent = () => {
      const html = editor.txt.html();
      previewHtml.value = html;
      drawerVisible.value = true;
    };
    const onDrawerClose = () => {
      drawerVisible.value = false;
    }

    onMounted(() => {
      handleQuery();
      editor = new E('#content');
      editor.config.zIndex = 0;
      editor.create();
    });

    return {
      columns,
      // docs,
      loading,
      level1,

      modalVisible,
      modalLoading,
      handleSave,
      handleQuery,
      doc,
      KeyValue,
      treeSelectData,

      add,
      edit,
      handleDelete,
      getDeleteIds,
      showDeleteConfirm,

      drawerVisible,
      previewHtml,
      handlePreviewContent,
      onDrawerClose
    }
  }
});
</script>